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<a href="#define-members">Macros</a>  </div>
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<div class="title">PBUF<div class="ingroups"><a class="el" href="group__lwip.html">lwIP</a> &raquo; <a class="el" href="group__lwip__opts.html">Options (lwipopts.h)</a></div></div>  </div>
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Macros</h2></td></tr>
<tr class="memitem:ga35998a3d56af9940e6a80bb372597685"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__lwip__opts__pbuf.html#ga35998a3d56af9940e6a80bb372597685">PBUF_LINK_HLEN</a>&#160;&#160;&#160;(14 + <a class="el" href="group__lwip__opts__arp.html#gad7fa3b356ca7e603e848b069c4cc6276">ETH_PAD_SIZE</a>)</td></tr>
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<tr class="memitem:ga6e1ba1875ae5168a17b53d83597bc1de"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__lwip__opts__pbuf.html#ga6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a>&#160;&#160;&#160;0</td></tr>
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<tr class="memitem:gae61f4491d56e805e79b79eb5d35a00e5"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__lwip__opts__pbuf.html#gae61f4491d56e805e79b79eb5d35a00e5">PBUF_POOL_BUFSIZE</a>&#160;&#160;&#160;<a class="el" href="group__compiler__abstraction.html#gaef204be511fd32f681b55abc08e9ae18">LWIP_MEM_ALIGN_SIZE</a>(<a class="el" href="group__lwip__opts__tcp.html#gaf1ab7bb27860aa3677c387a2f3ba317b">TCP_MSS</a>+40+<a class="el" href="group__lwip__opts__pbuf.html#ga6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a>+<a class="el" href="group__lwip__opts__pbuf.html#ga35998a3d56af9940e6a80bb372597685">PBUF_LINK_HLEN</a>)</td></tr>
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<tr class="memitem:gaaefb80d6bf9257c0f4322c36e1272c38"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__lwip__opts__pbuf.html#gaaefb80d6bf9257c0f4322c36e1272c38">LWIP_PBUF_REF_T</a>&#160;&#160;&#160;u8_t</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Macro Definition Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#gaaefb80d6bf9257c0f4322c36e1272c38">&#9670;&nbsp;</a></span>LWIP_PBUF_REF_T</h2>

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          <td class="memname">#define LWIP_PBUF_REF_T&#160;&#160;&#160;u8_t</td>
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<p>LWIP_PBUF_REF_T: Refcount type in pbuf. Default width of u8_t can be increased if 255 refs are not enough for you. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ga6e1ba1875ae5168a17b53d83597bc1de">&#9670;&nbsp;</a></span>PBUF_LINK_ENCAPSULATION_HLEN</h2>

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          <td class="memname">#define PBUF_LINK_ENCAPSULATION_HLEN&#160;&#160;&#160;0</td>
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<p>PBUF_LINK_ENCAPSULATION_HLEN: the number of bytes that should be allocated for an additional encapsulation header before ethernet headers (e.g. 802.11) </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ga35998a3d56af9940e6a80bb372597685">&#9670;&nbsp;</a></span>PBUF_LINK_HLEN</h2>

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          <td class="memname">#define PBUF_LINK_HLEN&#160;&#160;&#160;(14 + <a class="el" href="group__lwip__opts__arp.html#gad7fa3b356ca7e603e848b069c4cc6276">ETH_PAD_SIZE</a>)</td>
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<p>PBUF_LINK_HLEN: the number of bytes that should be allocated for a link level header. The default is 14, the standard value for Ethernet. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#gae61f4491d56e805e79b79eb5d35a00e5">&#9670;&nbsp;</a></span>PBUF_POOL_BUFSIZE</h2>

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          <td class="memname">#define PBUF_POOL_BUFSIZE&#160;&#160;&#160;<a class="el" href="group__compiler__abstraction.html#gaef204be511fd32f681b55abc08e9ae18">LWIP_MEM_ALIGN_SIZE</a>(<a class="el" href="group__lwip__opts__tcp.html#gaf1ab7bb27860aa3677c387a2f3ba317b">TCP_MSS</a>+40+<a class="el" href="group__lwip__opts__pbuf.html#ga6e1ba1875ae5168a17b53d83597bc1de">PBUF_LINK_ENCAPSULATION_HLEN</a>+<a class="el" href="group__lwip__opts__pbuf.html#ga35998a3d56af9940e6a80bb372597685">PBUF_LINK_HLEN</a>)</td>
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<p>PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. The default is designed to accommodate single full size TCP frame in one pbuf, including TCP_MSS, IP header, and link header. </p>

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